1.a To replicate the tables and figures reported in Lost In Space, please unzip all enclosed files in one working directory and open "LIS-PSRM-REPL_pdf.Rmd" in Studio, and Knit this document into either html or pdf, per your preferences.  The PDF/HTML document contains the generated replications alongside of a copy of the original image found in the manuscript.

1.b To replicate the maps produced, run the program plotly_static.R  in Rstudio; it produces individual png images of each map.

2. Platform information:
platform       x86_64-apple-darwin15.6.0   
arch           x86_64                      
os             darwin15.6.0                
system         x86_64, darwin15.6.0        
status                                     
major          3                           
minor          4.3                         
year           2017                        
month          11                          
day            30                          
svn rev        73796                       
language       R                           
version.string R version 3.4.3 (2017-11-30)
nickname       Kite-Eating Tree 

RStudio Version 1.1.383

4. Package information:
> packageVersion("stringr")
[1] ‘1.1.0’
> packageVersion("plyr")
[1] ‘1.8.4’
> packageVersion("tidyr")
[1] ‘0.6.0’
> packageVersion("ngram")
[1] ‘3.0.1’
> packageVersion("magrittr")
[1] ‘1.5’
> packageVersion("tm")
[1] ‘0.6.2’
> packageVersion("RWeka")
[1] ‘0.4.29’
> packageVersion("randomForest")
[1] ‘4.6.12’
> packageVersion("e1071")
[1] ‘1.6.7’
> packageVersion("nnet")
[1] ‘7.3.12’
> packageVersion("caret")
[1] ‘6.0.78’
> packageVersion("RgoogleMaps")
[1] ‘1.4.1’
> packageVersion("AUC")
[1] ‘0.3.0’
> packageVersion("ROCR")
[1] ‘1.0.7’
> packageVersion("caTools")
[1] ‘1.17.1’
> packageVersion("doParallel")
[1] ‘1.0.10’

Comments and questions to:

Sophie J. Lee (sophie.jiseon.lee@gmail.com),
Howard Liu (hao.liu@duke.edu),
Michael D. Ward (michael.don.ward@gmail.com)
